Posthole-drilling machine



Jan 9, 1923 D. A. DASHER.

- POSTHOLE DRILLING MACHINE;

FILED OCT. 20, 1920- 2 SHEETSSHEET 1- Jan. 9, 1923.

v L JMHfiML, D. A. DASHEH.

POSTHOLE DRILLING MACHINE FILED OCT. 20, 1920.

2 SHEETS-SHEET 2.

DANIEL ARCHIE DASHEIt, 01E RIVJEItIOhl, ILLINOIS.

POSTHOLE-JDRIJLLING MACHINE.

Application filed @ctober 2'0, 1920. Serial No. tlfidldfi.

T 0 all who m. ii may concern:

Be it known that l, DANIEL A. DAsrrnn, a citizen of the United States, residing at Riverton, in the county of Sangamon, State of Illinois, have invented a new and useful Posthole-Drilling Machine; and I do hereby declare the following to be a full, clear, and exact description of the invention. such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to post hole drilling machines and has for its object to provide a device of this character comprising a wheel supported platform, on which platform an. engine is mounted, power from said engine being utilized to rotate a horizontally d1s-.

CIGiiSGd downward feeding of the threaded bar may be obtained or the bar raised as a whole. Also to provide a feathered gear on the upper end of the threaded bar, which gear meshes with a gear carried by the horizontally disposed shaft.

A further object is to provide plumbing means whereby the proper level of the machine may be obtained before starting a boring operation. 7

With the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawings described and claimed, it being understood that changes in the precise embodiment of the inventlon may be made within the 'scopeof what is claimed without departing from the spirit of the invention.

In the drawings Figure 1 is a side elevation of the machine, parts being broken away to better show the structure.

Figure 2 is a front elevation of the ma& chine.

Referring to the drawings, the numeral 1 designates a platform which platform is provided with U-shaped brackets 2 in which are slidably mounted blocks 3. The blocks 3 have pivoted thereon the supporting wheels t, which wheels are utilized for moving the machine from place to place. By

pivotally mounting the wheels 4 on the blocks 3 the level of the platform 1 may be varied as desired. The varying of the level being accomplished by means of dogs 5, which cooperate with the teeth 6 of the blocks 3. The dogs 5 are provided with handle members 7 by means of which handle members the dogs-may be forced out of engagement with the teeth 5.

Risin upwardly from a substantially central position of the platfol'm 1 is a framework 8 in bearings 9 of which is rotatabl mounted a horizontally disposed'drive shaft 10. Unelend of the drive shaft 10 has secured thereto as at lla drive pulley 12 and also an idle pulley 13. Extending around the drive pulley 12 and the pulley 14 of an engine 15 is a belt 16 by means of which belt the drive pulley 12 is rotated and consequently the shaft 10 also rotated. Engine 15 is disposed on the platform 1 and is preferably an internal combustion engine.

Secured to one end of the shaft 10 is a bevel gear 16, which bevel gear meshes with a bevel gear 17 which is'slidably mounted on the portion 18 of the auger carrying screw 19. The portion 18 of the auger carrying screw is slidably mounted in a hear-- ing 20 of a bracket 21 and is also slidably mounted in the bevel gear 17. As the gear 17 is rotated the auger carrying screw 19 is also rotated. Screw 19 is provided with a threaded portion 22, which-threaded portion meshes with a worm gear 23. The worm gear 23 is normally stationary and as the auger screw 19 rotates it will be seen that the screw will be fed downwardly in the bearing 24 of the bearing block 25. The lower end of the auger screw 19 is provided with chuck 26, in which chuck the shank 27 of an auger 28 is secured. It will be seen that as the feeding screw 19 rotates that the auger 28 will he forced downwardly into the ground.

desired to move the threaded bar 19. It will be seen that a drilling mechanism is provided wherein the downward feeding of the' that the auger may-be raised from the hole 34 as desired and even when the screw bar 19 is rotated. v

Secured to the sides of the framework 4:- as at 35 are plumb lines 36, to the lower ends of whichare secured plumb bobs, said plumb bobs forming means whereby the level of the platform 1 may be easily established and raised to a horizontal plane by means of the slid-able blocks 3 and dogs 5.

The invention having been set forthwhat is claimed, as new and useful is A post hole drilling machine comprising a wheel sup-ported platform, a-framework carried by said platform, a rotatable feedin screw rotatably mounted in bearings carried by the framework and also slidably mounted .in said bearings, said feed screw having a threaded portion and a non threaded portion, ahorizontally pivoted worm gear meshing with the thread of the threaded portion of the feed screw, means for rotating said worm gear for raising and lowering the screw independent of rotation of the screw, a bevel gear feathered on the unthreaded portion of said feed screw, a horizontally disposed shaft rotatably mounted in the framework, a bevel gear mounted on the horizontally disposed shaft and meshing with said beveled gear, an engine located on the platform and belt and pulley connections between said engine and the horizontally disposed framework carried shaft.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DANIEL ARCHIE DASHER.

Witnesses:

N. G. MINER, F, R. DIOKERSON. 

